Solar Battery Calculator
Calculate the ideal solar battery size and cost for your home. Determine battery storage needs based on energy consumption and solar generation.
Step 1: Energy Consumption
Understanding Battery Sizing
A typical home uses 20-30 kWh per day. Your solar battery should cover your essential loads during the night or power outages. Most homes need 10-15 kWh of storage.
Step 2: Costs & Efficiency
About Battery Costs
Lithium-ion batteries cost $500-$1,500 per kWh installed. LiFePO4 batteries last longer but cost more. Consider both upfront cost and lifetime when choosing.
Solar Battery Analysis Results
Recommended Battery Size
Battery Type Comparison
| Battery Type | Cost per kWh | Lifespan (cycles) | Efficiency | 10 kWh System Cost |
|---|
Energy Flow Visualization
Battery Sizing Formula
Battery Size = Daily Consumption × Backup Days ÷ Depth of Discharge
To calculate battery size: Multiply your daily energy consumption by the number of backup days desired. Divide by the battery’s depth of discharge (typically 0.9 for lithium).
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